悪あく筆ひつ

noun

poor handwriting; bad handwriting

Refers to handwriting that is messy, illegible, or unattractive. Often used self-deprecatingly.

• 彼かれは悪あく筆ひつで有ゆう名めいだ。

  He is famous for his bad handwriting.

• 悪あく筆ひつで申もうし訳わけありません。

  I'm sorry for my poor handwriting.